Xemnas

Being 37 years old and 6'3" tall and the founder of Organization XIII and apparently the oldest of Nobodies, Xemnas is heartless, in every sense of the word. Xemnas does not even remember what it was like to have any feelings, but he understands anger and envy. He claimed that this allowed him to have a clear understanding of the heart, but, in reality, this had warped his mind into believing that only anger, hatred, and other negative emotions were what make up most of a heart. However, he does feel some empathy and was aware that the members of the original Organization XIII were treated harshly by those with hearts, despite Organization XIII's often cruel nature, and sees Real Organization XIII as those who were unfairly outcast by those afraid of their power and knowledge of the past. Despite this, he did want to ruthlessly manipulate the original Organization XIII Nobodies and also gain more power in Real Organization XIII after killing Sora and creating a new set of worlds.

His lack of emotion deprives him of remorse for his actions, as well as the loss of the other members of the Organization. The only thing he truly cared about was Kingdom Hearts and his desire for power, and even lamented it when it was damaged. However, on some occasions, he had appeared to value friendship, as he was shown to converse with the armor of Aqua in the Chamber of Repose, although, this is likely due to the influence of Terra, as he is, in a sense, Terra's Nobody.

Unlike the other members of the Organization, Xemnas did not seem to want Kingdom Hearts for a true existence. Rather, much like his Heartless counterpart, he wanted it to use it to obtain power and remake the universe in his image. This concept was furthered as Xemnas thought that nothingness was the source of much power, and does not seem to despise it in the slightest. This goal stemmed from that of one of his two original personas, Master Xehanort, whom also desired to unlock Kingdom Hearts for the same purpose in Kingdom Hearts Birth by Sleep.

In other matters Xemnas spoke with calmness and deep authority, strangely similar to Master Eraqus. He had a tendency to be overly melodramatic, making long-winded speeches, exaggerating his false rage and sorrow with wide sweeping arm movements and hand gestures, like many villains. While ridiculous in nature, his exaggerations were representations of his lack of emotion. He was very intelligent, overall, and knew how to manipulate others, particularly Sora and his friends for his own needs.

He can be surprisingly honest and open at times, as when confronted by Sora shortly after the first clash of their final duel in the World That Never Was, Sora earnestly declares that a heart is more than suffering and rage; and asks if Xemnas does not remember that; he responds honestly, and quite wistfully, that he does not.

He is obsessed with the concept of freedom, at the cost of others except the most powerful, and projects his feelings onto his enemies such as Sora, as seen in Dream Drop Distance when he taunted Sora about his supposed lack of freedom. He is also fascinated by death, both the idea of himself dying from old age and killing others.

Xemnas' personality seemed to share traits from both beings who composed his original persona, Master Xehanort and Terra. From the former he inherited his manipulative nature and the ideas for the black coat and adding the letter "χ" to rename himself and his fellow Organization members.[2] It is very hard to say how much he inherited from Terra, but there is at least the familiarity with Aqua's armor, to which he refers to as a "friend", and his strong desire to find his other "friend" in Castle Oblivion, as he has had Saïx and Axel search for the Chamber he sleeps in. Another example was when Roxas fell into a comatose state, saying: "So, sleep has taken you again". Like Terra, he also cares greatly about the ancient Keyblade legacy and believes his actions honor it, despite fighting without a Keyblade.

He is also somewhat naive like Xehanort, believing that Larxene would obey him and Real Organization XIII unquestioningly due to their past history together despite her prior treachery.

After being defeated one last time, Xemnas accepts his defeat with dignity, and while lamenting that he was bested again, finally regains his emotions and realizes that he misses his companions and that he took them for granted. Due to his newfound feelings of loneliness, Xemnas states that a heart is just about pain but when Sora counters that pain is a part of being human, Xemnas gives the boy a praising smile for being strong enough to live on

Like all the Organization members, Xemnas wears the standard black coat, gloves, and knee-length boots with silver trimming and high concave indentations in the top. He has orange eyes and tanned skin, much like his Heartless counterpart, though he later gains golden eyes to signify him harboring a piece of Xehanort's heart. Xemnas's hair is long, reaching to about mid-back, silver in color, and some of it falls over his shoulders. His hairstyle is reminiscent of Xehanort's hair, including his bangs, the color, and the length. It also shares traits with Terra's hair, including its layered, messy look and the spike on the top of his head.

Because Xemnas was born from the body of Terra, his overall appearance is identical to Terra's, save for the silver hair, orange eyes, and older appearance resultant from having Xehanort's soul.

While commanding The World That Never Was, Xemnas dons armor adorned with dozens of Nobody symbols. The shoulder pad on his left shoulder, helmet, crown, boots, knees, and breastplate all sport these designs. His crown and shoulder pad are gold, while the rest of the armor is colored in light shades of blue and silver. He has two silver belts on his waist and what seem to be white feathers on his right shoulder in place of armor. Several cords crisscross in front of his torso, connecting to massive, oblong pieces of armor worn on each arm. Xemnas's faceplate is beak-like in structure and he wears clawed, metal gloves.

He also wears black pants underneath the armor. Perhaps the most striking features of this armor are the odd, pulsating growths sprouting from Xemnas's right shoulder and both arms. These growths appear organic and are a mixture of red, orange, yellow, and white. While the larger one on his shoulder seems to connect Xemnas to his dragon-like Nobody battleship, the other two on his arms just lie on the ground, seemingly serving no purpose. This armored form, referred to as the Armored Controller, bears a striking resemblance to No Heart.

In his final section of his battle with Sora and Riku, dubbed "Final Xemnas," Xemnas's appearance is unchanged, save for his cloak. His black coat is now white and is covered with intricate black designs that resemble the Nobody sigil.